| US 7,568,835 B2 | ||
| Temperature sensor | ||
| Peter Pils, Stuttgart (Germany); Ulli Rudischer, Winnenden (Germany); and Gerhard Waltner, Waiblingen (Germany) | ||
| Assigned to Otto Egelhof GmbH & Co. KG, Fellbach (Germany) | ||
| Filed on Aug. 19, 2006, as Appl. No. 11/506,606. | ||
| Claims priority of application No. 10 2005 039 607 (DE), filed on Aug. 19, 2005; and application No. 10 2006 022 620 (DE), filed on May 12, 2006. | ||
| Prior Publication US 2007/0071065 A1, Mar. 29, 2007 | ||
| Int. Cl. G01K 5/32 (2006.01) | ||
| U.S. Cl. 374—187 [374/190; 374/202; 374/143] | 15 Claims |
| 1. Temperature sensor with a temperature-dependent actuating device comprising a capillary tube which is filled with a gaseous or liquid medium which—in case of temperature changes along a measuring distance formed by the capillary tube—effects a pressure or volume change and which comprises a path transmission element which is provided medium-tight at one end of the capillary tube and exerts a stroke movement depending on the pressure or volume in the capillary tube, and with a sensor which is designed as a Hall-effect probe and which detects, contact-free, the stroke movement of the path transmission element via a magnet arranged on the path transmission element or a section pointing toward the Hall-effect probe on the path transmission element of a magnetic material, characterized in that the path transmission element is fixed on the housing bottom, and that a printed circuit board taking up the Hall-effect probe is arranged physically separate from the path transmission element on a further housing section adjacent to or opposite the housing bottom of the housing. |